Let us draw your attention to a website of the Scientific Electronic Library – eLibrary.ru. You can get actually every publication of the Russian Ornithological Journal after free registration on the site. Some of them are dedicated to Short-toed Eagle (Ru):

This small gallery is composed of Vladimir Ivanovski’s pictures. The photos were taken in Northern Belarus /map/. Also here you can see Short-toed Eagle chick in the artificial nest built by Dr. Ivanovski for them. He is an author of the special method of the building.